"Creative energy has migrated into industrial design and digital animation - video games, for example, are booming," she told Vice.

"Commercial architecture is also thriving, as shown by amazingly monumental new buildings everywhere from Dubai to Beijing.

"But the fine arts have become very insular and derivative. There is good work being done, but it too often reminds me of ten other sometimes better things over the past 100 years. The main problem is a high-concept mentality. There's too much gimmickry and irony and not enough intuition and emotion.

"The long finale of Revenge of the Sith has more inherent artistic value, emotional power and global impact than anything [by contemporary artists]. It's because the art world has flat-lined and become an echo chamber of received opinion and toxic over-praise.

"It's like the emperor's new clothes - people are too intimidated to admit what they secretly think or what they might think with their blinders off."